Black Opal and Stibiotantalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
Not Available
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Not Available
{???} Perfect
Mohs Hardness
6-6.5
5.5-6
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
SbTaO 4Ulrich Henn and Claudio C.
Black Opal and Stibiotantalite Chemical Formula
While comparing Black Opal and Stibiotantalite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Black Opal and Stibiotantalite chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Black Opal and Stibiotantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Stibiotantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Stibiotantalite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is Not Available whereas that of Stibiotantalite is Not Available.